Hi Bulat,
2007/6/13, Bulat Ziganshin <[EMAIL PROTECTED]>:
> We've had a discussion on #haskell about how we can make a function
> that reads in serialized values of an open data type, such as
look at Data.Generics.Text which may be implements exactly what you
need
Unfortunately not. Data.Generics.Text provides
gread :: Data a => ReadS a
That is, you have to constrain its return type to the particular type
you want to read. What I'm looking for is a way to read any type
implementing a certain class (deciding the type to use based on a type
tag) and returning the result in an existential wrapper.
- Benja
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
